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5 sheets-snaai 1.

(No Model.)

L` 8a E. IANKE.

' FEED MILL. No. 306,401. Patented Oct. 14, 1884. lyf

(No Model.) 5 sheetssheen 2.

' L. 8a E. IANKE.

FEED MILL. No. 306,401. Patented Oct. 14, 1884.

(N10 Model.) 5 sheets-sheet 3. L. 8u E. IANKE.

FEED MILL. No. 306,401. Patented 001;. 14, 1884.

QN@ Model.) 5 Sheets-Sheet 4.

L. 85 E. IANKE.

FEED MILL.

N0. 306,401.' Patented Oct. 14, 1884.

"nirrnn Srnfrias Partnr @ittica LEOPOLD IANKE AND EMIEL IANKE, OF FREDONIA, XVISCONSIN.

FfiDlVllLL.

SPECIFICATION forming part of Letters Patent No. SOSA-0l, dated October 14:, 1884-.

I Application flied March 2i, 1384. (No model.)

To @ZZ when?, t may concern,.-

Be it known that we, LnoroLD Linien and Farini. IANKE, citizens of the United States, residing at Fredonia, in the count y of Ozaukee and State of Wisconsin, have invented certain new and useful Improvements in Feed-Mills; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Uur invention relates to improvements in machines for grinding coarse feed, and the construction and operation of our machine are explained by reference to the accompanying drawings, in vhieh- Figures l and 2 represent opposite sides of our machine. Fig. 3 is a front view. Fig. i is a vertical section drawn transversely ofthe grinding-rolls. Figs. 5 and 6 are details.

Like parts are represented bythe same reference-letters throughout the several views.

Motion is communicated tothe machine from the motive power through a band operating on the pulley A, and from thence through the shaft B, pulley C, and belt D to pulleys E and F. Motion is communicated from pulley E to the lower grinding-roll G, by shaft I-I, and from the pulley F to the upper grinding-roll, L, through shaft J.

lo the end ofthe shaft H, opposite the pulley E, is a ily-wheehl, by which a steady uniform movement of the machine is attained.

Parallel to the roll L is arranged another roll, I, which is adapted to revolve slower than l roll L, whereby the grain is partially cut and ground by the action ofthe more rapidly revel ving roll, as well as crushed between said rolls. Motion is communicated to the roll I from the pulley M upon the end of shaft B opposite the pulley C, as shown in Fig. 2, through the belt N pulley O, and shaft l).

q is a hopper, into which the grain is placed preparatory to being ground. rlhe bottom of the hopper isprovided with a bottom board,.

It, inelining downward toward the front oi the hopper, aud an outward swinging door, S, by which the escape of grain from the hopper is governed. A

The passage I is providcdwith an agitator, U, consisting of a cylindrical shaft provided with radial pins, which, as said shaft is ro tated, looscns up the surrounding grain and causes it to be uniformly fed from the hopper. The projecting end of said agitator is provided with a pulley, w, to which motion is communicated from the edge of said pulley O by belt A, or from another pulley on saine shaft, as shown in Fig. 2. rlhe door S is piveted to the inelosingecase at its respective ends on pivotsr/g, and is operated by the lever B, rod C', and lever D. The lever D is centrally pivotcd upon the support F, which support is attaehedto the side of the hopper. rlhe projecting end of the support E is provided with a hand-nut, F', by and between which and the support the lever is firmly held vby turning down said nut, whereby the door S is held at any desired point of adjustment. rlhe shaft of the rollmI is supported at its`respective ends in journal-bearings provided therefor in the upper ends of the swinging arms H H. The lower ends of the arms I-I H are supported by the projecting ends ot' the shaft I, while their upper ends are held in place and adjusted toward the right and left by the rods J J. The rods J J are supported at their ends by the lugs K K, through which they pass. Ihe swinging ends of the arms H II are connected with said adjusting-rods J Jby the blocks L L and trunnions M M, as shown in Figs. 5 and 6, the rods J J passing through said blocks L L, while the truunions M M on said blocks are adapted to turn in their bearings in the upper ends of said arms as said arms are adjusted. Slots O O are provided in the inclosing-ca-se I to permit ofthe required movement of the shaft I) therein while adjusting the roll I. The ends of the respect ive rods J J are provided with nuts q q' and It It.

I nterposed between the hand-nuts R It and the case P are ill-shaped or other forms of springs S S, by which the rods J J are drawn forward with the upper ends of the swinging arms II II, whereby the roll I is yieldingly held toward the roll L, as shown in Fig. 5.

To prevent the rolls I and L from coming in actual contact, and also to adjust them at various distances apart as maybe required for grinding different kinds of feed, the nuts q Q ICO , springs S S', and carrying with them the roll between the rolls.

are provided upon the rear ends of said adj justing-rods J' J', which nuts q q" limit the forward movement of said rods and roll I. As said nuts g' q' are turned forward and against the bearings of the case, the rods J J' and the roll I are drawn back, and the space between said upper rolls increased as is required for grinding coarse feed, while the springs S S' yield suffi ciently to permit of the required adjustment.

When it is desired to adjust the rolls I and L nearer to each other for finer work, the nuts q' q are turned rearward, or toward the ends of the rods, whereby said rods are permitted to be moved forward by the action of said I. Ihe office ofthe springs S' S' is twofold, first, to draw said rods J J with the roll I forward, as mentioned, when the nuts q' q' are loosened, and, second, to permit said roll I to move rearward automatically as may be required to permit stone or other foreign substances to pass The peripheries of the several rolls are grooved, forming serrated teeth or edges, as shown. The rolls I and L rotate inward toward each other, as indicated by the arrows, as mentioned, at differential rates of speed, whereby the feed is cut and crushed in its passage between them. When the feed is thus acted upon by the rolls I and L, it drops upon the concave surface of the serrated apron T', when it is further acted upon by the grooved grinding-roll G. (Shown in Fig 4.) 'Ihe apron T' is suspended at'its upper edge upon pivotal bearings w fac/,which extend through openings p rovided therefor in the inclosing-case. rIhe lower end of said apron is curved partially beneath said roll G, terminating beneath its center, whereby the feed is readily discharged, when ground,

2 A. y l, 306,401

tension of which is sufficient to communicate s the desired pressure from said screw to said apron for grinding purposes, while it will yield sufficiently to let a stone or other foreign substances pass between the roll and the apron, the apron being adjusted more closely to the roll for fine grinding by turning said screw c inward and less closely by a reverse movement of the screw. by the rolls I and L is sufficient, the screwa may be withdrawn, when the feed will fall past the apron to the bottom and out through the chute d' without being acted upon by the roll G.

There are various parts shown and described which are not of ourinvention, and only appear to show their operative connection or arrangement in the machine used by us. Our invention is fully set forth in the claims.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. 'Ihe combination of the hopper q, bottom R, agitator U, door S, said door having pivotal supports g g at its respective ends, lever B', rod C', lever D', supporting-screw E', and hand-nut F', sai-d hand-nut being adapted to rigidly retain said door at any desired point of adjustment, as set forth.

2. In a feed-mill, the mechanism for adjusting the movable roll, consisting in the combination of its shaft, the swinging arms H H', pivotal support I', trunnions M' IVI', blocks L' L', adjustingrods J J', adjusting-nuts q' q" and R' It', and springs S' S', as set forth.

3. In a feed-mill, the combination of stationary roll L, with adjustable roll I, shaft l?, arms H'II', supporting-rod I', trunnionsM' M', blocks L' L', rods J' J', springs S' S', and nuts q' q' and It R', as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

LEOPOLD IANKE. EMIEL IANKE.

Vitnesses:

Munras PAULUs, HENRY CALTE.

In case the iirst reduction made 

